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    <script>
        function isPrime(num){
            let flag = true ; 
            for( let i = 2 ; i <= num/2 ; i ++ ){
                if ( num % i == 0 ){
                    flag = false ;
                    break; 
                }
            }
            return flag ; 
        }
        function getPrime(max){
            let count = 0 ; 
            for ( let b = 2 ; ; b ++ ){
                if ( isPrime(b) ){
                    count ++ ;
                    if ( count == max ){
                        return b ; 
                    }
                }
            }
        }
        console.log(getPrime(10001));
        // 104743
    </script>
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